William f



(No Model.)

W. F. HYATT.

LOCK.

No. 444,885. Patented Jan. 20, 1891.

UNITED STATES j PATENT I rricE.

\VILLIAM F. HYATT, OF BROOKLYN, NEW YORK.

LOCK.

SPECIFICATION forming part of Letters Patent No. 444,885, dated January 20, 1891. Application filed April 21, 1890. Serial No. 348,832. (No model.)

To all 1071,0112, it may concern:

Be it known that 1, WILLIAM F. I'IYAIT, of Brooklyn, Kings county, and State of New York, have invented a certain new and use ful Improvement in Locks, of which the following is a specification.

I will describe a lock embodying my improvement, and then point out the novel features in the claims.

In the accompanying drawings, Figure 1 is a front View of a lock embodying my improvement. Fig. 2 is a similar view with part of the case removed. Fig. 3 is a section taken lengthwise of the bolt and at the plane of the dot-ted line a: 00, Fig. 1, looking in the direction indicated bythe arrow which is drawn at one end of said line. Fig. 4: is a front View of a lock of modified construction. Fig. 5 is a back view of this lock. Fig. 6 is a section of this look, taken at the plane of the dotted line 3 1 Fig. l. Fig. 7 is a side view of a key for this lock. Fig. 8 is an end view of this key. Fig. 9 is a front view of a lock of another modified construction. Fig.10isaview of the key of the lock illustrated in Fig. 9.

Similar letters of reference designate corresponding parts in all the figures.

Referring first to Figs. 1 to 3, inclusive, A A designatethe case of the look. It consists of two plates, one of which, A, is adapted to fit against the edge of a drawer or like article and has a lip a at one edge, and the other of which A consists of a small plate having two sides and one end bent down at right angles or thereabout. The bent side edges bear against the plate A and are secured thereto in any suitable manneras, for instance, by means of spurs extending therefrom through holes in the plate A and clinched or riveted beyond said hole. That end of the plate A which is not bent over abuts against or is adjacent to the lip a of the plate A. The lip a of the plate A has an opening through it opposite the plate A As shown, this lookease has a tubular post for the reception of a key. This tubular post has inwardlyprojecting portions a forming wards. One of these wards is made by making slits through the wall of the post eircumi'erentially, and then bending inward the metal intermediate of the slits. Any number of wards may be similarly made. The key for this look has notches corresponding in positions to the wards. B designates the belt of this look. It consists of a flat plate having a deep notch in one side. C designates a post, which is fastened to the plate A and projects into the notch of the bolt B. D designates a cam fitted to the post 0 and working within the notch of the bolt B. This cam is made of resilient wire bent into U form and tightly grasping the post C. Its bent portion is rounded. hold the cam in either of two positions into which it may be adjusted. In one of these positions the operative end of the cam projects toward the opening in the lip a of the plate A. It then holds the bolt in a position to lock the article to which the lock is applied. In the other position the operative end of the cam extends away from the lip Ct and holds the bolt within the case. The length of the cam is such that in either of its two positions it may practically fill the notch of the bolt and hold the latter against movement. In the present instance the wire forming the cam is slightlynotohed where the post 0 is grasped by it, and it is desirable to so form it because then it will be prevented from detachment. I have shown the post G as having four flat sides; but it may be sufficient to provide it merely with but one flat side. be round, if desired. The advantage of a flat side is that it will hold the cam in any position to which it may be adjusted, and also eitect the complete throw of the cam to its proper position.

It will be observed that the key of this look has at the extremity two prongs. These are intended to enter between the arms of the cam D on opposite sides of the post 0, so that they may rotate said cam when the key is rotated) Turning now to the example of my improvement illustrated by Figs. 4 to 8, inclusive, A

designates a plate similar to the plate A of the lock first described, except that it differs therefrom somewhatin outline. B designates the bolt, having two portions, one of which extends through the opening in the lip a of the plate A, and the other of which is oifset and extends through an opening a in the The post 0 has flat sides, so as to Indeed, it mayplate A and bears against the rear side of said plate. This offset portion, bearing against the rear side of the plate A, is made slightly wider and slightly longer than the hole a so as to have a bearing on the front of the plate A. The bolt may nevertheless be inserted in place by having that portion which passes through the opening in the lip a first inserted through the hole a and after the rocking of the bolt into position,passed through the opening in the lip a. The offset portion of this bolt has a deep notch, similar to that in the bolt of the first-described example of my improvement. A designates a plate applied to the back of the plate A and covering the offset portion of the bolt Bnvhich bears against the front of the plate A. This plate is shown as made of rectangular form and has its edges bent over all round to bear against the front of the plate A. It is just wide enough to accommodate the offset portion ofthe bolt B and long enough to allow of the movement of this portion of the bolt within it to a sufficient extent for the principal portion of the bolt to do its Work. The plate A may be secured in any suitable manner. As shown, it is provided wit-h lugs, which extend rearwardly through the holes in the plate A and are clinched or riveted to the rear thereof. 0 designates a post corresponding to the post 0 previously described. It is fastened to the rear side of the plate A and projects rearwardly through the hole a of the plate A. D designates a cam like that comprised in the previous example of my improvement and similarly combined with the post E. The key for this look has a shank made of a strip of sheet metal notched at the lower extremity and having two transverse slits near the extremity. The metal between the notch and the slit is bent outward into a semicircular loop 3. The metal between the slits is bent outward to form a reverse semicircular loop 4 on the opposite side of the strip, and the metal above the slit is bent outwardly like the first loop. In this way I amable to form out of a fiat piece of metal a tubular shank for embracing the post and two prongs for engaging the cam.

In the lock illustrated byFig. 9 the case is similar to that of the first-described lock, excepting that the tubular post is smaller and there is an arc-shaped slot made concentric with this post in the plate A of the case. The key belongingto this lock, as maybe seen from Fig. 10, has two long prongs. The shorter of these prongs fits in the tubular post and the other enters the slot in the plate A of the case and is intended to engage between the arms of the cam to rotate the latter.

It will be seen that by my improvement I provide an extremely simple and cheap lock, which withal is serviceable, highly efficient, extremely durable, and capable of application to any article without entailing serious'cutting of the article.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a lock, the combination of a case, a bolt having a notch or opening formed in it, a post fastened to the lock-case and protruding into said notch or opening of the bolt, and a cam having two resilient arms which embrace said post, substantially as specified.

2. A look having a case provided with a tubular post in which a ward is formed by slitting the metal of which it is composed and bending a portion which is intermediate of the slits transversely to the lengthof the slits, substantially as specified.

3. In a lock, the combination of a case, a bolt having a notch or opening formed in it, and a cam for operating the bolt, located within said notch or opening and having a spring connection with its support, whereby it will be retained in position, substantially as specified.

4. In a lock, the combination of a substantially fiat case having an opening in one side or plate and a bolt ofiset intermediately of its ends to extendthrough said opening, and

having one end portion bearing against one surface of the saidside or plate of the lockcase and the other end portion bearing against the other surface of the said side or plate of the lock-case, substantially as specified.

WILLIAM F. HYATT. Witnesses:

WILLIAM M. ILIFr, S. O. EDMoNDs. 

